Pope Leo Lung Cancer Diagnosis: What We Know Now

The Pope Leo lung cancer diagnosis landed late on Tuesday night, when the Vatican confirmed that surgeons had removed the lower lobe of the pontiff's right lung and that tissue tests showed lung adenocarcinoma. For a leader of one point four billion Catholics, it is the biggest health story of his papacy so far, and the news cycle has not stopped since.

According to Reuters, the seventy-one-year-old was admitted to Rome's Gemelli hospital on Tuesday for surgery to remove a growth that doctors discovered during a recent routine health check. The Vatican's medical bulletin said the operation lasted about ninety minutes and went ahead with no complications, though the pope was in the operating room for roughly three hours in total, according to Vatican News.

What the Vatican actually said

The statement came from the pope's personal physician, Dr Luigi Carbone, and the hospital's chief of thoracic surgery, Professor Stefano Margaritora. They said the lower lobe was taken out using a video-assisted technique "to make the procedure curative," which signals that the goal was to remove all of the cancerous tissue in one go.

A rapid tissue exam done during the operation confirmed the diagnosis of lung adenocarcinoma, which the doctors said had been suspected from tests before surgery. After waking up normally, the pope returned to his room on the tenth floor of the hospital, according to the bulletin cited by Reuters.

Recovery update: eating, walking and a Mass

The follow-up news has been reassuring. On Wednesday the Vatican said Leo had a tranquil first night, and that morning blood tests and a chest X-ray came back with values "within the expected range for the type of operation performed," according to Vatican News.

The pope has also done respiratory physiotherapy, started walking around his room and gone back to a regular diet, with breakfast and lunch both eaten. Vatican press office director Matteo Bruni told journalists that Leo concelebrated Mass on Wednesday afternoon in a room set up for the purpose at the hospital, Vatican News reported. The Vatican says his recovery is proceeding as expected.

The big unanswered question: the stage

What nobody outside the surgical team knows yet is how far the disease had progressed. Reuters notes that the Vatican did not immediately share the tumour's size or whether any lymph nodes were involved. Those two details largely decide what comes next.

"While we have the diagnosis, we do not yet have the stage. This is critical to prognosis and treatment," Dr Stephen Liu, a lung cancer expert at Georgetown University, told Reuters. He added that if the cancer is small with no lymph node involvement, surgery itself is likely to be curative, but a larger extent of disease would point to a poorer prognosis.

Liu also told the Associated Press that adenocarcinoma is the most common type of lung cancer and the one with the most favourable prognosis. That is a useful bit of context for anyone doom-scrolling the headlines tonight, but it is not a forecast, and the final pathology report is what will really matter.

A pope without a backup

The timing is awkward because a pope has no deputy who steps in when he is sick. Reuters explains that when a pontiff is incapacitated, the Vatican's huge bureaucracy keeps running as usual but holds off on any decision that needs his approval. His public events have already been cancelled through October twentieth, and he is expected to stay in hospital for about a week.

Then there is the road trip. Leo is scheduled to make an eleven-day tour of Uruguay, Argentina and Peru in November, and it is not clear whether it will go ahead as planned. The Associated Press reports that Peru's president has suggested the pope may have to change his plans for the Latin American visit.

Why this one hits different

Leo is relatively young for a modern pope. Elected in May of last year as the first pontiff born in the United States, he grew up in Chicago as Robert Prevost, spent decades as a missionary and bishop in Peru, and enjoys sports like tennis. Reuters notes that he is not known to be a smoker or to have had recent health problems, which is part of why the diagnosis surprised so many people.

His openness is also a break from tradition. DW reports that Leo has been unusually candid about his health for a pope and told thousands of people in St. Peter's Square about the surgery ahead of time. For a generation that grew up expecting institutions to hide bad news, that transparency stands out.

For now, the Pope Leo lung cancer picture is cautiously hopeful: a successful operation, a smooth first two days and a patient who is up, eating and praying. The next major update will be the staging results, and until then the Vatican's daily bulletins are the best place to watch. For more health coverage, check the health section on this site.